NAME¶

llvm-mc - manual page for llvm-mc 3.7

DESCRIPTION¶

ERROR: ld.so: object 'libfakeroot-sysv.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored. OVERVIEW: llvm machine code playground

USAGE: llvm-mc [options] <input file>

OPTIONS:

General options:

-I=<directory> - Directory of include files

-aarch64-neon-syntax - Choose style of NEON code to emit from AArch64 backend:

=generic

- Emit generic NEON assembly

=apple

- Emit Apple-style NEON assembly

-arch=<string> - Target arch to assemble for, see -version for available targets

-asm-instrumentation - Instrumentation of inline assembly and assembly source files

=none

- no instrumentation at all

=address

- instrument instructions with memory arguments

-asm-show-inst - Emit internal instruction representation to assembly file

-bounds-checking-single-trap - Use one trap block per function

-code-model - Choose code model

=default

- Target default code model

=small

- Small code model

=kernel

- Kernel code model

=medium

- Medium code model

=large

- Large code model

-color - use colored syntax highlighting (default=autodetect)

-compress-debug-sections - Compress DWARF debug sections

-cppfname=<function name> - Specify the name of the generated function

-cppfor=<string> - Specify the name of the thing to generate

-cppgen - Choose what kind of output to generate

=program

- Generate a complete program

=module

- Generate a module definition

=contents

- Generate contents of a module

=function

- Generate a function definition

=functions

- Generate all function definitions

=inline

- Generate an inline function

=variable

- Generate a variable definition

=type

- Generate a type definition

-defsym=<string> - Defines a symbol to be an integer constant

-disable-spill-fusing - Disable fusing of spill code into instructions

-dwarf-version=<int> - Dwarf version

-enable-implicit-null-checks - Fold null checks into faulting memory operations

-enable-load-pre -

-enable-objc-arc-opts - enable/disable all ARC Optimizations

-enable-scoped-noalias -

-enable-tbaa -

-exhaustive-register-search - Exhaustive Search for registers bypassing the depth and interference cutoffs of last chance recoloring

-fdebug-compilation-dir=<string> - Specifies the debug info's compilation dir

-filetype - Choose an output file type:

=asm

- Emit an assembly ('.s') file

=null

- Don't emit anything (for timing purposes)

=obj

- Emit a native object ('.o') file

-g - Generate dwarf debugging info for assembly source files

-gpsize=<uint> - Global Pointer Addressing Size.

The default size is 8.

-imp-null-check-page-size=<uint> - The page size of the target in bytes

-internalize-public-api-file=<filename> - A file containing list of symbol names to preserve

-internalize-public-api-list=<list> - A list of symbol names to preserve

-join-liveintervals - Coalesce copies (default=true)

-limit-float-precision=<uint> - Generate low-precision inline sequences for some float libcalls

-main-file-name=<string> - Specifies the name we should consider the input file

-mattr=<a1,+a2,-a3,...> - Target specific attributes (-mattr=help for details)

-mc-relax-all - When used with filetype=obj, relax all fixups in the emitted object file

-mcpu=<cpu-name> - Target a specific cpu type (-mcpu=help for details)

Action to perform:

-as-lex - Lex tokens from a .s file

-assemble - Assemble a .s file (default)

-disassemble - Disassemble strings of hex bytes

-mdis - Marked up disassembly of strings of hex bytes

-mips16-constant-islands - Enable mips16 constant islands.

-mips16-hard-float - Enable mips16 hard float.

-mno-ldc1-sdc1 - Expand double precision loads and stores to their single precision counterparts

-n - Don't assume assembly file starts in the text section

-no-discriminators - Disable generation of discriminator information.

-no-exec-stack - File doesn't need an exec stack

-nvptx-sched4reg - NVPTX Specific: schedule for register pressue

-o=<filename> - Output filename

-output-asm-variant=<uint> - Syntax variant to use for output printing

-print-after-all - Print IR after each pass

-print-before-all - Print IR before each pass

-print-imm-hex - Prefer hex format for immediate values

-print-machineinstrs=<pass-name> - Print machine instrs

-regalloc - Register allocator to use

=default

- pick register allocator based on -O option

=basic

- basic register allocator

=fast

- fast register allocator

=greedy

- greedy register allocator

=pbqp

- PBQP register allocator

-relocation-model - Choose relocation model

=default

- Target default relocation model

=static

- Non-relocatable code

=pic

- Fully relocatable, position independent code

=dynamic-no-pic

- Relocatable external references, non-relocatable code

-rewrite-map-file=<filename> - Symbol Rewrite Map

-rng-seed=<seed> - Seed for the random number generator

-sample-profile-max-propagate-iterations=<uint> - Maximum number of iterations to go through when propagating sample block/edge weights through the CFG.

-save-temp-labels - Don't discard temporary labels

-show-encoding - Show instruction encodings

-show-inst - Show internal instruction representation

-show-inst-operands - Show instructions operands as parsed

-stackmap-version=<int> - Specify the stackmap encoding version (default = 1)

-stats - Enable statistics output from program (available with Asserts)

-time-passes - Time each pass, printing elapsed time for each on exit

-triple=<string> - Target triple to assemble for, see -version for available targets

-verify-debug-info -

-verify-dom-info - Verify dominator info (time consuming)

-verify-loop-info - Verify loop info (time consuming)

-verify-regalloc - Verify during register allocation

-verify-region-info - Verify region info (time consuming)

-verify-scev - Verify ScalarEvolution's backedge taken counts (slow)

-x86-asm-syntax - Choose style of code to emit from X86 backend:

=att

- Emit AT&T-style assembly

=intel

- Emit Intel-style assembly

Generic Options:

-help - Display available options (-help-hidden for more)

-help-list - Display list of available options (-help-list-hidden for more)

-version - Display the version of this program

SEE ALSO¶

The full documentation for llvm-mc is maintained as a Texinfo manual. If the info and llvm-mc programs are properly installed at your site, the command

info llvm-mc

should give you access to the complete manual.